Air conditioner



FIG. 1 is a front view of an air conditioner showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side view, the opposite side being a mirror image thereof;

FIG. 5 is front perspective view thereof;

FIG. 6 is a rear perspective view thereof; and,

FIG. 7 is a bottom view thereof.

The broken-line disclosure of internal elements in the views is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for an air conditioner, as shown. 